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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Carrying Amount [Member]    
Long-term Financial Liabilities [Abstract]    
Long-term Debt, Fair Value $ 104,557 $ 104,936
Estimated fair value [Member]    
Long-term Financial Liabilities [Abstract]    
Long-term Debt, Fair Value $ 119,165 $ 120,243